Loaded-Vehicle Control
Forged 6-piston front calipers with 79 cm² total piston area per caliper for managing added curb weight.
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Direct-Mount Series · Front Axle · Off-Road 6-Piston
The TTSPORT OR6 front big brake kit is built for loaded Ford Bronco and Bronco Raptor (U725) builds running larger tires, armor, winch, roof tent, and recovery gear. It targets predictable pedal control on long descents, washboard roads, and slow technical sections — not headline bite numbers.
Stock front brakes were sized for stock weight and stock tire diameter. Add 35s, a steel front bumper, a winch, sliders, and a rooftop tent, and the front axle is doing more work every time you slow down. Heat builds faster, pad bite changes through a descent, and the pedal starts to feel different from corner one to corner ten.
OR6 increases front clamping capacity and thermal headroom so the pedal stays consistent when the truck is loaded and the grade is long.
Forged 6-piston front calipers with 79 cm² total piston area per caliper for managing added curb weight.
2021-2026 Ford Bronco and 2022-2026 Ford Bronco Raptor (U725) use the OR6 Ø340 mm × 32 mm front rotor specification.
Heat-treated high-carbon iron rotors, internally vented, sized for sustained heat on long downhills.
One-piece heat-insulated pistons with dust boots and PTFE / SUS304 stainless braided lines for trail dust, vibration, and heat cycling.
Direct-Mount Series caliper configured for the Ford Bronco and Bronco Raptor (U725) front axle — not a universal bracket workaround.
The included pads run a 0–600 °C operating range with an average μ of 0.38, tuned for loaded trail and overland use rather than peak track bite.
| Brake Caliper | |
|---|---|
| Series | Direct-Mount Series |
| Model / Application | OR6 |
| Axle Position | Front |
| Piston Count | 6-piston |
| Piston Type | One-piece heat-insulated pistons with dust boots |
| Piston Diameter | 40 mm × 4 / 43 mm × 2 |
| Caliper Dimensions | L 301 mm × W 149 mm × H 130 mm |
| Total Piston Area | 79 cm² per caliper, all pistons combined |
| Manufacturing Process | Two-piece forged aluminum body |
| Net Weight | 4 kg per caliper, without pads |
| Surface Finish | High-temperature gloss coating |
| Recommended Wheel Size | 17 in or larger |
| Recommended Rotor Size | Ø340–355 mm × 32/34 mm |
| Brake Rotor | |
| Rotor Material | Heat-treated high-carbon cast iron |
| Axle Position | Front |
| Rotor Dimensions for This Application | Ø340 mm × 32 mm |
| Construction | One-piece rotor |
| Ventilation | Internally vented |
| Rotor Mounting | Fixed |
| Directional Design | Yes — left/right specific |
| Rotor Face Pattern | Wave Slot |
| Brake Pads | |
| Compatible Rotor Material | Iron / steel rotors only |
| Operating Temperature Range | 0–600 °C |
| Average Friction Coefficient | Average μ: 0.38; variation depends on temperature, line pressure, and rotor condition |
| Lines | |
| Brake Line Construction | Three-layer reinforced construction |
| Brake Line Material | PTFE inner liner / SUS304 stainless-steel braid / PVC protective outer sheath |
| Brake Line Fittings | Vehicle-specific fittings; caliper-side and chassis-side fittings vary by application |
| Vehicle Application & Rotor Mapping | |
| 2021-2026 Ford Bronco (U725) | 340 mm × 32 mm |
| 2022-2026 Ford Bronco Raptor (U725) | 340 mm × 32 mm |
| Fitment & Installation | |
| Primary Vehicle Application | 2021-2026 Ford Bronco (U725) · 2022-2026 Ford Bronco Raptor (U725) |
| Model Years | Ford Bronco U725: 2021-2026 · Ford Bronco Raptor U725: 2022-2026 |
| Axle | Front |
| Caliper Mounting Type | Direct mount |
| Minimum Wheel Size | 17 in or larger |
| Minimum Spoke Clearance | 91 mm |
| Brake Line Fitting Type | Vehicle-specific fittings; caliper-side and chassis-side fittings vary by application |
| Bedding-In Procedure | Required |
For 2021-2026 Ford Bronco (U725) and 2022-2026 Ford Bronco Raptor (U725), the correct OR6 rotor specification is Ø340 mm × 32 mm. Do not use the older 335 / 345 / 355 mm × 34 mm option layout for this application.
2 × OR6 forged 6-piston front calipers, left/right specific.
Brake pads for both front calipers, rated 0–600 °C and intended for iron / steel rotors.
2 × one-piece front rotors, Ø340 mm × 32 mm, heat-treated high-carbon cast iron, internally vented and left/right specific.
2 × vehicle-specific stainless braided brake lines with PTFE inner liner, SUS304 braid, and PVC protective outer sheath.
Vehicle-specific direct-mount hardware for Ford Bronco / Bronco Raptor (U725) front-axle installation.
Direct-Mount Series uses one-piece rotors and direct-mount calipers. Rotor Hats and Caliper Brackets are not included because they are not used on this OR6 application.
OR6 calipers require 17 in or larger wheels with a minimum 91 mm spoke clearance. Most 17 in off-road wheels with open spoke designs clear, but wheel diameter alone is not enough — confirm your specific spoke shape, offset, and inner barrel profile before ordering.
17 in or larger wheels are required.
Minimum spoke clearance: 91 mm. Confirm the wheel's inner spoke geometry against the caliper outline before installation.
Application: 2021-2026 Ford Bronco (U725) and 2022-2026 Ford Bronco Raptor (U725), front axle, with Ø340 mm × 32 mm rotor specification.
Need help confirming wheel clearance or OR6 compatibility for your Bronco build? Send your model year, trim, wheel specs, tire size, vehicle weight, and use case before ordering.
Yes. This OR6 front kit is configured for 2021-2026 Ford Bronco (U725) and 2022-2026 Ford Bronco Raptor (U725). The correct rotor specification for both applications is Ø340 mm × 32 mm.
OR6 calipers require 17 in or larger wheels with a minimum 91 mm spoke clearance. Most 17 in off-road wheels with open spoke designs clear, but wheel diameter alone is not enough — confirm your specific spoke shape, offset, and inner barrel profile before ordering.
2021-2026 Ford Bronco (U725) and 2022-2026 Ford Bronco Raptor (U725) use Ø340 mm × 32 mm one-piece front rotors in the OR6 Direct-Mount Series. Do not use the older 335 / 345 / 355 mm × 34 mm option layout for this application.
No. This is a Direct-Mount Series OR6 application with one-piece rotors and direct-mount calipers. Rotor Hats and Caliper Brackets are not used on this configuration.
Yes. This listing is the OR6 front axle big brake kit for Ford Bronco and Bronco Raptor (U725). It does not include rear hardware.
The included pads run a 0–600 °C operating range with an average μ of 0.38, tuned for predictable modulation on loaded trail and overland use rather than peak track bite.
Yes. A proper bedding-in procedure is required to transfer pad material to the rotor face and stabilize friction before heavy use or long descents.
Yes. The kit includes three-layer stainless-steel braided lines with PTFE inner liner, SUS304 stainless-steel braid, and PVC protective outer sheath. Caliper-side and chassis-side fittings are vehicle-specific.
Build a brake package matched to your Bronco's weight, tires, and terrain.
Brake Kits · Fitment · Installation · Care Guide
A brake kit is not just a pair of larger calipers. Calipers, rotors, pads, hoses, brackets, rotor hats, mounting hardware, brake fluid, wheel clearance, and bedding procedure all work together as one system.
This guide explains how to confirm the right TTSPORT brake kit before ordering, what to check before installation, and how to care for the system after installation.
Do not order a brake kit by vehicle name alone. The correct kit depends on the vehicle, axle position, wheel package, driving use, and brake system layout.
Brake kits are application-specific. A visually similar kit can still have the wrong rotor offset, bracket geometry, hose fitting, caliper position, or wheel clearance requirement.
Different TTSPORT brake kit series use different hardware layouts. Always confirm what the kit includes before purchase.
Use direct-mount calipers and one-piece rotors where specified. These kits do not use rotor hats or caliper brackets unless the final product page clearly states otherwise.
Use separate friction rings and rotor hats. Hat offset, ring bolt pattern, hardware style, and rotor direction must be matched correctly.
May require bespoke brackets, rotor hats, brake lines, and engineering confirmation based on knuckle, hub, wheel, and competition use.
Require extra attention to wheel clearance, tire size, vehicle load, descent control, hose routing, and dust / water exposure.
Do not assume every brake kit includes the same parts. Package contents vary by product series, vehicle application, and final order configuration.
Before finalizing the order, review the kit specification carefully. Confirm the brake kit is matched to your vehicle and wheel setup, not only to the model name.
If any part is not listed in the final order or product page, do not assume it is included.
Inspect every component before installation. Do not modify, grind, drill, stretch, force, or space brake kit components to make them fit.
Safety: Brake kits affect braking force, hydraulic sealing, heat control, wheel clearance, and vehicle stability. Do not install the kit if fitment, torque, direction, clearance, or compatibility is unclear.
Correct installation is as important as the brake kit itself. A properly engineered kit can still perform poorly if installed with dirty mounting faces, incorrect torque, poor hose routing, or trapped air in the hydraulic system.
Verify caliper centering over the rotor and confirm even pad sweep across the friction surface.
Confirm left / right rotor direction if the rotor uses directional vanes or directional face pattern.
Check brake hose length and routing at full steering lock and full suspension travel. No twisting, rubbing, stretching, or kinking.
Check caliper-to-spoke and caliper-to-barrel clearance before road use. Wheel diameter alone is not enough.
Use the correct brake fluid type and bleed the system until pedal feel is firm and consistent.
Torque all brake hardware to the specified value. Do not reuse damaged, unknown, stretched, or corroded safety-critical fasteners.
Brake pads and rotors need a controlled bedding process before full performance is available. Bedding helps create an even transfer layer on the rotor surface, improving bite, pedal consistency, and vibration resistance.
Street pads, race pads, iron rotors, two-piece rotors, and carbon ceramic rotors may require different bedding procedures. Use the procedure supplied with the specific kit.
After installation and bedding, give the system a short break-in period before aggressive use. Pedal feel, pad contact, dust output, and noise may continue to settle after the first drives.
Brake kits need regular inspection, especially after track use, off-road use, towing, mountain driving, winter salt exposure, or any brake service.
Inspect pads, rotors, fluid level, and hose condition during normal service intervals. Prioritize quiet operation, smooth pedal feel, and even wear.
Check pad thickness, rotor surface condition, and fluid condition more often. Long descents create sustained heat even without track use.
Inspect for mud, sand, stone impact, hose abrasion, dust boot damage, and caliper contamination after trail use.
Inspect pads, rotors, fluid, and hardware before and after every event. Track heat shortens service intervals.
Check rear brake temperature, hydraulic handbrake behavior, pad wear, rotor cracking, and hardware condition frequently.
Use only compatible pads and approved bedding procedures. Inspect rotor surface condition carefully and avoid incompatible friction materials.
Do not continue driving if the brake system shows any of the following symptoms. Inspect the system or contact a qualified brake technician before using the vehicle again.
Send your vehicle details, brake kit series, wheel specs, driving use, photos, and any symptoms you notice. TTSPORT will help confirm fitment, installation checks, and the correct care path for your brake kit.
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